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Using Biomarkers from Prehistoric Human Feces to Track Settlement and Agriculture
November 26, 2012 — Geoscientists have used a biomarker from human feces in a new way to establish the first human presence, the arrival of grazing animals and human population dynamics in a ... > full story -
Carbon Buried in the Soil Rises Again
November 5, 2012 — A team of researchers estimated that roughly half of the carbon buried in soil by erosion will be re-released into the atmosphere within about 500 years, and possibly faster due to climate ... > full story -
Climate Modeler Identifies Trigger for Earth's Last Big Freeze
November 5, 2012 — For more than 30 years, climate scientists have debated whether flood waters from melting of the enormous Laurentide Ice Sheet, which ushered in the last major cold episode on Earth about 12,900 ... > full story -
Massive Volcanic Eruption Puts Past Climate and People in Perspective
November 5, 2012 — The largest volcanic eruption on Earth in the past millions of years took place in Indonesia 74,000 years ago and researchers can now link the colossal eruption with the global climate and the ... > full story -
After Long-Ago Mass Extinction, Global Warming Hindered Species' Recovery
November 5, 2012 — Researchers have discovered why plants and animals had a hard time recovering from the largest mass extinction in Earth’s history 250 million years ago. The reason: global ... > full story -
Did the Changing Climate Shrink Europe's Ancient Hippos?
October 25, 2012 — Giant German hippopotamuses wallowing on the banks of the Elbe are not a common sight. Yet 1.8 million years ago hippos were a prominent part of European wildlife, when mega-fauna such as woolly ... > full story -
Bowhead Whales: Ancient DNA Sheds Light on Arctic Whale Mysteries
October 19, 2012 — Scientists have published the first range-wide genetic analysis of the bowhead whale using hundreds of samples from both modern populations and archaeological sites used by indigenous Arctic hunters ... > full story -
Tropical Collapse in Early Triassic Caused by Lethal Heat: Extreme Temperatures Blamed for 'Dead Zone'
October 18, 2012 — Scientists have discovered why the 'broken world' following the worst extinction of all time lasted so long -- it was simply too hot to survive. The end-Permian mass extinction, which occurred around ... > full story -
'Time-Capsule' Japanese Lake Sediment Advances Radiocarbon Dating for Older Objects
October 18, 2012 — A series of radiocarbon measurements from Japan's Lake Suigetsu will give scientists a more accurate benchmark for dating materials, especially for older objects. Researchers extracted cores ... > full storyMore: -
Ice Age Polarity Reversal Was Global Event: Extremely Brief Reversal of Geomagnetic Field, Climate Variability, and Super Volcano
October 16, 2012 — Some 41,000 years ago, a complete and rapid reversal of the geomagnetic field occured. Magnetic studies on sediment cores from the Black Sea show that during this period, during the last ice age, a ... > full story
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